Sink-head top.



D. 0. BUCHANAN.

I sm APPLICATION K HEAD TOP."

FILED SEPT.

Patented May 2, 1916.

W/T/VESSES:

INVENTOR- BY 960. a 9%, a

nrromvsy to which it appertains to make and use the DAVID D. BUCHANAN,or JoHnsTowN, PENNsYLvAitIa.

SINK-HEAD TOP.

Specification of Letters Patent.

Patented liftay 2, 119116.

I Application filed September 28, 1915. Serial N 0. 52,990.

To all whom it may concern:

Be it known that I, DAVID D. BUCHANAN, a citizen of the United States,residing in the city of J ohnstown, in the county of Cambria and Stateof Pennsylvania, (whose postoflice address is J ohnstown, Pennsylvania,)have invented certain new and useful Improvements in Sink-Head Tops; and1 do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart same.

My invention relates to a sink-head top adapted to be placed on theupper part of an ingot mold or other mold, whereby, when the mold andtop are filled with molten metal, such as steel or iron, the upperportion contained within the sink-head top, is maintained fluid byreason of the refractory and non-conducting character of that portion ofthe top adjacent to the metal sothat with a metal ingot mold, but wishit understood that it may be used in connection with other molds as willbereadily understood.

Referring now to the annexed sheet of drawings which forms part of thisspecification, Figure 1 is a vertical sectional elevation through thetop of an ingot mold and my sink-head taken on the line II of Flg.

2; Fig. 2 is a top plan of my sink-head and the top of the ingot mold;Fig. 3 is a side elevation of the inner face of one of the bricks usedin lining my sink-head casing; Fig. l is a detail view illustrating themanner of attaching the staple lugs to my sinkhead casing; Fig. 5 is anend elevation of one of the lining bricks. y

Referring now to the characters of reference on the drawings: 1indicates the ingot mold in generaLQ are the lifting lugs there of, 3the body of the ingot contained within said mold, 4 is the metal casingof my sinkhead top, 5 is an inwardly-projecting or ofl'- set shelfportion of the casing which is portion is solid,

adapted to rest on the upper surface of the ingot mold as shown, whilethe downwardly extending flange portion 6 of the sink-head casingprojects slightly into the top of the ingot mold for the purpose ofmaintaining my sink-head top in position thereon, and, as shown in thedrawings, I prefer to make the lower downwardly extending flange portionof my sink-head casing slightly smaller than the opening in the mold topto allow for irregularities in workmanship and to insure that it may bereadily placed therein. The space, however, between the downwardlyextending flange 6 and the inside of the mold top is'very small so thatthe molten metal will be cooled immediately on contact therewith and notflow into the small space, as this would cause a fin or projection,making it ditlicult to withdraw the casing from the mold.

The lifting staples on the sink-head top are indicated as 7, while 8 arethe enlarged portions of the casing adapted to receive the lower ends ofthe same, as shown, while 9 are inwardly extending ribs projecting fromthe corners of the casing against the sides of which the lining bricks10 are adapted to be seated. The lining bricks are provided with beveledends 11, as illustrated, and I prefer to make the inner faces 12 of thebricks, inclined in such a Way that the thicker portion of each brick isabove and the thinner portion below, thereby forming a sink-head oftapering form smaller at the top than at the bottom, whereby the sinkhead top may be readily Withdrawn from the metal which is cast therein.It will be noted that I prefer to make the inwardly extending ribs 9shorter than the beveled ends of the. bricks, thereby leaving a spacebetween the inner portions of the edges of the bricks, which, after theyare set inplace, I

fill with clay, grout or other lute 13, as

illustrated. This further serves to hold the bricks in place andprevents contact of molten metal with the metal portions of the easingor with the ribs 9 thereof.

The sink-head in general is indicated as 14: and the shrinkage cavitytherein as 15.

The advantages of this form of construction are that the casing with thebrick lining can be readily stripped from the top of the ingot and usedagain and again many times, thereby greatly reducing the labor and costof a construction of this kind, as

previouslv, by reason of the form, construction and arrangement ofsink-head tops, they can only be used once, as they are either burned tothe ingot top and have to be broken off, or are formed of material suchthat their shape has to be destroyed before the ingot can be subjectedto heating or further treatment. Another advantage is that by reason ofmy construction the bricks can be easily slid into place within thecasing, the slight openings at the corners quickly closed by mud, luteor other material, and the whole structure made in one to be readily putin place. Another advantage is that the bricks, being of simple form,are easily and cheaply made as compared with other shapes which are madein one piece with a large hole therethrough, these latter shapes beingvery difficult to make,

causing considerable labor and expense in handling and breakage. Anotheradvantage of my construction is that the bricks can be readily packed ina small space in manufacture, shipment and storage prior to use. Anotheradvantage of my construction is that it requires very little lute or mudto seal the top of the mold, and, on account of the small amount of thismoist material, the heat of the casing or mold is sufficient to dry thetop preparatory to use, whereas other forms require special drying ovensor other means to put them into condition for use.

Although I have described and illustratet my invention in considerabledetail, I do not wish to be limited to the exact and specific detailsthereof, as shown and described, but may use such modifications in,substitutions for, or equivalents thereof, as are embraced within thescope of my invention, or as pointed out in the claims.

Having thus described my invention, what I claim and desire to secure byLetters Patent is:

1. A sink-head top comprising a metallic casing, ribs extending inwardlytherefrom and bricks fitting therein with their edges adjacent to saidribs, thereby forming a sink-head top, open at the top and bottom.

2. A sink-head top comprising a metallic casing, ribs extending inwardlvtherefrom, a shelf or supporting portion near the bottom thereof, aflange downwardly projecting from said shelf, and a lining-formed of aplurality of bricks mounted Within with their edges adjacent to andsecured by said ribs.

3. A sink-head top comprising a metallic casing, ribs extending inwardlytherefrom, bllCKS mountedwithin said casing with their edges restingagainst and supported by the sides of the ribs aforesaid, and lutingbetween the adjacent edges of said bricks.

4. A. sink-headtop comprising a metallic casing adapted to set on top ofan ingot mold, a downwardly extending flange projecting within the topof said mold, adapted to maintain the casing thereon, ribs extendin fromthe inner corners ofsaid casing, bricks with beveled ends fitting withinsaid casing, their beveled ends contacting with and supported by theribs aforesaid.

5. The combination with a sink-head casing of the character described,of a plurality of bricks, mounted therein, of truncated wedge form withbeveled edges, adjacent but spaced apart.

In testimony whereof I hereunto ailix my signature in the presence oftwo Witnesses.

DAVID D. BUCHANAN.

\Vitnesses:

FRED A. STAHL, ELMER SEAVEY.

